TY - JOUR
T1 - Variational RPA for the dipole surface plasmon in metal clusters
AU - Hagino, K.
AU - Bertsch, G. F.
AU - Guet, C.
N1 - Funding Information:
We would like to acknowledge discussions with Nguyen Van Giai, N. Vinh Mau, P. Schuck, and M. Grasso. K.H. thanks the IPN Orsay for their warm hospitality and financial support. G.F.B. also thanks the IPN Or-say as well as CEA Ile de France for their hospitality and financial support. Additional financial support from the Guggenheim Foundation and the U.S. Department of Energy (G.F.B.) and from the the Kyoto University Foundation (K.H.) is acknowledged.
PY - 2004/2/9
Y1 - 2004/2/9
N2 - The deviation of the ionic background potential in simple metal clusters from the harmonic shape leads to a red shift of the surface plasmon from the Mie frequency, that is considerably larger than the spill-out correction. In order to estimate this effect, here we develop a variational approach to the RPA collective excitations. Using a simple trial form, we obtain analytic expressions for the energy shift beyond the spill-out contribution. We find that the additional red shift is proportional to the spill-out correction and has the same order of magnitude.
AB - The deviation of the ionic background potential in simple metal clusters from the harmonic shape leads to a red shift of the surface plasmon from the Mie frequency, that is considerably larger than the spill-out correction. In order to estimate this effect, here we develop a variational approach to the RPA collective excitations. Using a simple trial form, we obtain analytic expressions for the energy shift beyond the spill-out contribution. We find that the additional red shift is proportional to the spill-out correction and has the same order of magnitude.
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U2 - 10.1016/j.nuclphysa.2003.11.047
DO - 10.1016/j.nuclphysa.2003.11.047
M3 - Article
AN - SCOPUS:22944431823
SN - 0375-9474
VL - 731
SP - 347
EP - 354
JO - Nuclear Physics A
JF - Nuclear Physics A
IS - 1-4
ER -